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Posted to issues@hbase.apache.org by "Lars Hofhansl (JIRA)" <ji...@apache.org> on 2014/09/24 09:20:34 UTC

[jira] [Assigned] (HBASE-12077) FilterLists create many ArrayList$Itr objects per row.

     [ https://issues.apache.org/jira/browse/HBASE-12077?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Lars Hofhansl reassigned HBASE-12077:
-------------------------------------

    Assignee: Lars Hofhansl

> FilterLists create many ArrayList$Itr objects per row.
> ------------------------------------------------------
>
>                 Key: HBASE-12077
>                 URL: https://issues.apache.org/jira/browse/HBASE-12077
>             Project: HBase
>          Issue Type: Sub-task
>            Reporter: Lars Hofhansl
>            Assignee: Lars Hofhansl
>             Fix For: 2.0.0, 0.98.7, 0.94.24, 0.99.1
>
>         Attachments: 12077-0.98.txt, HBASE-12077.patch
>
>
> Almost all methods in FilterList do work on behalf of the passed list of filters, which - you guessed it - is always an ArrayList and we always iterate over those with an iterator. Multiple of these methods are called for each row leading to creating about 10 Itrs for every single row touched (whether filtered or not)



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